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Finding the Fourth Proportional to 86,790.93, 119,765.82 and 48,543.84

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Solution

The fourth proportional to 86,790.93, 119,765.82 and 48,543.84 is: 66,987.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,790.93 : 119,765.82 = 48,543.84 : x
  2. Step 2: Convert to fraction form
    86,790.93/119,765.82 = 48,543.84/x
  3. Step 3: Cross multiply
    86,790.93x = 119,765.82 × 48,543.84
  4. Step 4: Simplify right side
    86,790.93x = 5,813,892,985.59
  5. Step 5: Solve for x
    x = 5,813,892,985.59/86,790.93
  6. Step 6: Final answer
    x = 66,987.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.